--- com/itextpdf/signatures/SecurityIDs.java.orig	2016-05-02 16:35:28.000000000 +0700
+++ com/itextpdf/signatures/SecurityIDs.java	2016-07-31 22:00:22.900928000 +0700
@@ -54,6 +54,8 @@ public class SecurityIDs {
     public static final String ID_RSA = "1.2.840.113549.1.1.1";
     public static final String ID_DSA = "1.2.840.10040.4.1";
     public static final String ID_ECDSA = "1.2.840.10045.2.1";
+    public static final String ID_GOST3410 = "1.3.6.1.4.1.5849.1.1.5";
+    public static final String ID_ECGOST3410 = "1.3.6.1.4.1.5849.1.6.2";
     public static final String ID_CONTENT_TYPE = "1.2.840.113549.1.9.3";
     public static final String ID_MESSAGE_DIGEST = "1.2.840.113549.1.9.4";
     public static final String ID_SIGNING_TIME = "1.2.840.113549.1.9.5";